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The differential grasshopper (Melanoplus differentialis) is a species of grasshopper belonging to the genus Melanoplus found throughout northern Mexico, central United States and southern Ontario, Canada. It is considered a pest in most of its range.he differential grasshopper (Melanoplus differentialis) is a species of grasshopper belonging to the genus Melanoplus found throughout northern Mexico, central United States and southern Ontario, Canada. It is considered a pest in most of its range.
The karyotype is the set of chromosomes, both autosomes and sex chromosomes, in an organism. The karyotype found in 90% of the large family of short-horned grasshoppers, Acrididae, is usually given as 2n d- = 23 [22 + X (or XO)], the female karyotype, 23 (22 + XX), being usually inferred from the male.